OpenNTPProject.org - NTP Scanning Project

If you are a member of the general public:

How can I check my server? - run the command ntpdc -n -c monlist 192.0.2.1 or ntpq -c rv 192.0.2.1 - If you see a response, your server may be used in attacks.

How can I fix my server, router or other device? You should upgrade tp NTP-4.2.7p26 or later. You can add disable monitor to your ntp.conf and restart your NTP process if on an earlier version. Also check out the Team Cymru Secure NTP Template - Also see NTP Bug #1532

The server should also not respond to loopinfo or iostats requests as well